| Reference | {Deposit:: BLEIFUSS, R.L.,1972. THE IRON ORES OF SOUTHEASTERN MINNESOTA; IN; SIMS, P.K. AND MOREY,G.B.,EDS., GEOLOGYOF MINNESOTA; A CENTENNIAL VOLUME, MINN.GEOL.SURV.,P.498-505.}{Deposit:: STAUFFER, C.R. AND THIEL G.A.,1949. THE IRON ORES OF SOUTHEASTERN MINNESOTA, MINN.GEOL.SURV., SUMM.REPT.NO.3, 6P.} |